Climate change driven effects on transport, fate and biogeochemistry of trace element contaminants in coastal marine ecosystems
Communications Earth & Environment,
Год журнала:
2024,
Номер
5(1)
Опубликована: Окт. 4, 2024
Язык: Английский
Intercalibration: A Cornerstone of the Success of the GEOTRACES Program
Oceanography,
Год журнала:
2024,
Номер
37(2)
Опубликована: Янв. 1, 2024
The
international
GEOTRACES
program
was
developed
to
enhance
knowledge
about
the
distribution
of
trace
elements
and
their
isotopes
(TEIs)
in
ocean
reduce
uncertainty
sources,
sinks,
internal
cycling.
Recognizing
importance
intercalibration
from
outset,
implemented
efforts
early
program,
consensus
materials
were
generated
that
included
full
range
TEIs
dissolved
seawater,
suspended
particles,
aerosols.
section
cruises
include
“crossover
station(s)”
are
occupied
by
two
or
more
sections
whereby
all
aspects
sample
collection,
preservation,
processing
can
be
compared
intercalibrated.
Once
datasets
generated,
an
committee
reviews
reports
works
with
community
address
issues
provide
intercalibrated
data
for
intermediate
products.
This
process
has
resulted
a
highly
cooperative
shares
advances
protocols
strengthen
capacity
building
outcomes,
including
unprecedented
oceanic
atlas
TEIs,
quality
is
state-of-the-art.
article
outlines
development
implementation
successful
process.
Язык: Английский
GEOTRACES: Ironing Out the Details of the Oceanic Iron Sources?
Oceanography,
Год журнала:
2024,
Номер
37(2)
Опубликована: Янв. 1, 2024
Dissolved
iron
(dFe)
is
an
essential
micronutrient
for
phytoplankton,
with
vanishingly
low
oceanic
dissolved
concentrations
(pico-
to
nanomoles
per
kg)
known
limit
growth—and
thus
influence
primary
productivity
and
carbon
cycling—over
much
of
the
surface
ocean.
However,
because
considerable
challenges
associated
contamination-free
sample
collection
accurate
analysis
such
dFe
concentrations,
first
reliable
measurements
came
only
in
1980s.
Further,
by
2003,
despite
several
decades
research,
there
were
~25
full-depth
profiles
worldwide,
dust
considered
be
main
source.
Since
2008,
facilitated
extensive
field
campaign
rigorous
intercalibration
international
GEOTRACES
program,
has
been
“explosion”
availability
data,
hundreds
now
available.
Concurrently,
a
paradigm
shift
view
marine
Fe
cycle
where
multiple
sources
contribute,
some
forms
can
transported
great
distances
through
intermediate
deep
Here,
we
showcase
datasets
across
different
ocean
basins,
synthesize
our
current
multi-source
cycle,
spotlight
sediments
as
important
source,
look
future
directions
constraining
boundary
exchange.
Язык: Английский
The Value of Going To Sea on Big Ships and the Advantage of Multiple Tracers for GEOTRACES Style Programs
Oceanography,
Год журнала:
2024,
Номер
37(2)
Опубликована: Янв. 1, 2024
Following
a
brief
description
of
typical
GEOTRACES
oceanographic
cruise,
this
article
illustrates
the
benefits
multidisciplinary
and
multi-tracer
approach
that
has
characterized
GEOTRACES.
The
value
organization
type
research
cruise—which
requires
many
people
large
vessels—are
discussed
in
relation
to
resulting
carbon
footprint
potential
alternatives.
Язык: Английский
Introduction to the special issue on twenty years of GEOTRACES: An international study of the marine biogeochemical cycles of trace elements and isotopes
Oceanography,
Год журнала:
2024,
Номер
37(2)
Опубликована: Янв. 1, 2024
This
special
issue
of
Oceanography
celebrates
the
transformational
findings
international
GEOTRACES
program
in
chemical
oceanography,
20
years
after
drafting
Science
Plan
2004
(GEOTRACES
Planning
Group,
2006).
With
section
cruise
phase
ending
soon,
and
a
planned
pivot
toward
smaller-scale
process
studies,
this
is
an
opportune
time
to
look
back
at
achievements
during
last
two
decades
highlight
some
advances
our
understanding
processes
that
determine
oceanic
distributions
trace
elements
isotopes
(TEIs).
Язык: Английский